Background
During the annual equipment overhaul at a large chemical plant, hundreds of electrical control cabinets were required to be tested for voltage, current and breakout. The field environment is faced with difficulties such as cable density and space constraints, and the traditional universal-use forms are prone to data errors due to faulty contact with slots or poor graphs, and even to short-circuit equipment risks。
It's a challenge
(b) the electrician, zhang, while detecting the 380v electric power plant, had erroneously plugged the tablet into the current hole to measure the voltage and at risk burned the fuse
(b) control cabinets have only 1. 5 mm slots, which are difficult to touch precisely
During night watch inspections, frequent manual openings are required after a long period of watch hibernation, delaying recovery efficiency。
Frock's watch solution
15b/17b max, a national one-size-fits-all table for 3 million engineers, has been widely appreciated by engineers since its listing, especially for several functions of upgrading to better help them solve problems:
1 mishandling sound light alert
When zhang inadvertently inserted the red pen into the 10a current hole measuring voltage, the flashing alarm and the flashing of red lights were immediately used to stop operational errors and avoid damage to equipment and safety incidents。
21mm sharp pen-tip design
In the face of the dense end platoon, li used a high-strength graph to easily penetrate the gap, to precisely contact the 2 mm distance relay contact point and to improve the efficiency of the breakout test by 40 per cent。
3 any key awakening
At night, when inspecting the power distribution room, the electrician must only touch any button to awaken the device in an instant, quickly complete the emergency voltage test and reduce the time for troubleshooting by 50 per cent。
Four readings from 4,000 to 6,000
When testing dc 24v control circuits, the "0. 43 ma" (traditional 4,000-word equipment shows "0. 00ma" only) was displayed in the graph, which revealed poor insulation of relay circuits and early replacement to avoid production line shutdowns。
Value of results
Security upgrades: 3 high-risk operations intercepted by mishandling alarms and “zero incidents” performed throughout the year
(a) efficiency enhancement: an increase in the number of single-day tests from 50 to 80 as a result of high-profile graphs and random keys awakening
Cost savings: avoidance of equipment burning and reduction of potential maintenance losses exceeding $100,000。
User voices
"17b max is like an old partner with a bug-proof system that is fast and steady in a race for seconds, and always pulls us at critical moments!" — head of chemical plants and equipment, wang —
